body {
  min-width: 320px;
  max-width: 750px;
  margin: 0 auto;
  background-color: #F5F5F5;
}
a {
  text-decoration: none;
}
li {
  list-style: none;
}
@media screen and (min-width: 750px) {
  html {
    font-size: 37.5px !important;
  }
}
nav {
  height: 1.6rem;
  background-color: #FF8A00;
  display: flex;
}
nav a:nth-child(1) {
  height: 1.3333rem;
  width: 2.6667rem;
  flex: 2;
  margin: 0.1333rem 1.0667rem;
}
nav a:nth-child(1) img {
  width: 100%;
  height: 100%;
}
nav a:nth-child(2) {
  height: 1.3333rem;
  width: 0.8rem;
  flex: 1;
  margin: 0.1333rem 0 1.3333rem 1.3333rem;
}
nav a:nth-child(2) img {
  width: 100%;
  height: 100%;
}
nav a:nth-child(3) {
  height: 1.3333rem;
  width: 0.8rem;
  flex: 1;
  margin: 0.1333rem 1.04rem;
}
nav a:nth-child(3) img {
  width: 100%;
  height: 100%;
}
.shou {
  height: 3rem;
  background-color: #fff;
  line-height: 3rem;
  border-bottom: 1px solid #ccc;
}
.shou span:nth-child(1) {
  font-weight: 700;
  padding-left: 0.5333rem;
}
.search {
  margin-top: 0;
  height: 3.2rem;
  line-height: 1.8667rem;
  border-bottom: 1px solid #ccc;
  line-height: 2.5rem;
}
.search .sou {
  display: flex;
  justify-content: space-between;
  height: 2.5rem;
  width: 95%;
  background-color: #fff;
  margin-left: 0.5333rem;
  margin-top: 0.5333rem;
}
.search .sou input {
  border: none;
  outline: none;
}
.search .sou .sp {
  display: block;
  width: 1.6rem;
  height: 1.6rem;
  margin-top: 0.5333rem;
  border-left: 1px solid black;
}
.search .sou .sp:nth-child(2) {
  padding-left: 1.0667rem;
}
.search .sou .sp:nth-child(3) {
  border-left: none;
  margin-right: 2.5333rem;
}
.search .sou .sp img {
  width: 100%;
  height: 100%;
}
.xia {
  display: flex;
  border-bottom: 1px solid #ccc;
  background-color: #fff;
}
.xia li {
  flex: 1;
}
.xia li select {
  border: none;
  outline: none;
}
